ASTROSAT CZTI

Data Quality Report

Orbit 35479

Creation date: 2022-04-21T08:45:19.930467
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1T04_095T01_9000005080_35479cztM0_level2.evt modeM0/AS1T04_095T01_9000005080_35479cztM0_level2_quad_clean.evt
Size (bytes)1,225,817,280177,016,320
Size1.1 GB 168.8 MB
Events in quadrant A4,817,0501,369,502
Events in quadrant B6,591,4811,360,432
Events in quadrant C19,684,849697,718
Events in quadrant D5,406,6341,288,293

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197294
B0253733
C0649123
D0216873

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9270690.744337%
B92705586.019417%
C9270636168.619202%
D92701811.952535%

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 13363 9272 55 55 0.41% 0.59%
B 13363 9272 386 386 2.89% 4.16%
C 13362 9271 5480 5480 41.01% 59.11%
D 13363 9272 142 142 1.06% 1.53%

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 10 83 204869 899.01 1160 1141 226.6
A 15 169 104714 457.05 1160 1141 226.6
A 13 6 20733 86.46 1160 1141 226.6
B 5 236 880768 4246.08 1133 1108 207.2
B 5 200 648485 3124.86 1133 1108 207.2
B 5 172 367412 1768.13 1133 1108 207.2
C 4 254 16153949 108535.67 661 666 148.8
C 0 207 346810 2325.78 661 666 148.8
C 0 10 232095 1555.0 661 666 148.8
D 5 157 242410 897.29 1135 1107 268.9
D 12 217 196138 725.22 1135 1107 268.9
D 13 249 174997 646.61 1135 1107 268.9

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