ASTROSAT CZTI

Data Quality Report

Orbit 20190331_A05_205T01_9000002824_level2

Creation date: 2019-04-03T16:40:46.751003
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_205T01_9000002824cztM0_level2_bc.evt modeM0/AS1A05_205T01_9000002824cztM0_level2_quad_clean.evt
Size (bytes)4,920,543,3601,456,554,240
Size4.6 GB 1.4 GB
Events in quadrant A32,931,0649,019,060
Events in quadrant B38,501,6229,456,110
Events in quadrant C22,179,6879,353,199
Events in quadrant D47,990,4358,822,279

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01510
C01510
D01510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022200
B022200
C022200
D022200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02804380
B02901020
C02262330
D03299820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10889983927.706223%
B10889973956.790696%
C10889916591.523430%
D10889997758.976207%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 124034 108868 480 480 0.39% 0.44%
B 124034 108897 632 632 0.51% 0.58%
C 124034 108904 8 8 0.01% 0.01%
D 124034 108895 747 747 0.60% 0.69%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 235 11301244 9351.98 5516 5402 1207.9
A 6 16 197523 159.06 5516 5402 1207.9
A 13 254 107572 84.59 5516 5402 1207.9
B 3 112 13771485 12785.42 5656 5509 1076.7
B 7 220 1023924 945.87 5656 5509 1076.7
B 0 189 990687 915.0 5656 5509 1076.7
C 3 233 277687 204.82 5625 5598 1328.4
C 6 96 151539 109.86 5625 5598 1328.4
C 0 207 36192 23.03 5625 5598 1328.4
D 7 238 12310678 9570.13 5507 5309 1285.8
D 12 218 8137436 6324.52 5507 5309 1285.8
D 1 52 4391078 3410.9 5507 5309 1285.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter