ASTROSAT CZTI

Data Quality Report

Orbit 20210319_T03_286T01_9000004268_level2

Creation date: 2025-12-23T14:24:08.639700
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/AS1T03_286T01_9000004268cztM0_level2.fits modeM0/AS1T03_286T01_9000004268cztM0_level2_quad_clean.evt
Size (bytes)2,581,557,1202,532,363,840
Size2.4 GB 2.4 GB
Events in quadrant A15,834,90615,317,224
Events in quadrant B15,366,68215,463,071
Events in quadrant C15,594,25214,725,353
Events in quadrant D13,190,27013,001,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04190
B04190
C04190
D04190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054100
B054100
C054100
D054100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05492570
B05556520
C05659660
D07786940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26557229081.094995%
B26557239441.485096%
C26557279572.996174%
D265572174276.562062%

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 307508 265549 0 0 0.00% 0.00%
B 307508 265534 0 0 0.00% 0.00%
C 307508 265499 0 0 0.00% 0.00%
D 307508 265293 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 13461 9.63 4121 3884 994.5
A 7 110 12467 8.63 4121 3884 994.5
A 9 19 11830 7.99 4121 3884 994.5
B 2 9 12269 10.69 4065 3885 784.5
B 2 8 10231 8.09 4065 3885 784.5
B 5 128 10175 8.02 4065 3885 784.5
C 1 81 12404 8.24 4117 3872 1035.7
C 1 80 12380 8.21 4117 3872 1035.7
C 12 241 11113 6.99 4117 3872 1035.7
D 15 46 10134 6.7 3767 3436 1000.1
D 10 189 9423 5.99 3767 3436 1000.1
D 6 231 9221 5.78 3767 3436 1000.1

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