ASTROSAT CZTI

Data Quality Report

Orbit 20230104_A12_102T01_9000005466_level2

Creation date: 2023-01-05T11:03:25.854454
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/AS1A12_102T01_9000005466cztM0_level2.fits modeM0/AS1A12_102T01_9000005466cztM0_level2_quad_clean.evt
Size (bytes)272,940,480313,908,480
Size260.3 MB 299.4 MB
Events in quadrant A1,766,6742,232,385
Events in quadrant B1,695,1742,233,974
Events in quadrant C1,732,6502,150,608
Events in quadrant D748,000578,168

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0717210
B0703220
C0700380
D02489140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06880
B06880
C06880
D06880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A336381330.395386%
B336382320.689696%
C33638760.225935%
D336382613577.694869%

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 43905 33637 0 0 0.00% 0.00%
B 43905 33637 0 0 0.00% 0.00%
C 43905 33638 0 0 0.00% 0.00%
D 43904 33023 0 0 0.00% 0.00%

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 0 29 1490 8.87 460 431 119.4
A 9 19 1469 8.69 460 431 119.4
A 7 110 1467 8.68 460 431 119.4
B 2 9 1516 12.18 447 426 89.5
B 3 80 1307 9.84 447 426 89.5
B 2 8 1222 8.89 447 426 89.5
C 1 81 1435 8.43 458 429 119.4
C 3 202 1383 7.99 458 429 119.4
C 3 203 1379 7.96 458 429 119.4
D 10 189 564 6.26 213 193 59.3
D 7 3 552 6.06 213 193 59.3
D 3 14 548 5.99 213 193 59.3

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