ASTROSAT CZTI

Data Quality Report

Orbit 53903

Creation date: 2025-09-15T11:18:09.399015
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/AS1A14_057T04_9000006508_53903cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53903cztM0_level2_quad_clean.evt
Size (bytes)709,004,16073,385,280
Size676.2 MB 70.0 MB
Events in quadrant A3,593,198598,219
Events in quadrant B3,629,359641,240
Events in quadrant C6,711,992500,850
Events in quadrant D11,821,08942,487

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153611
B0149601
C0243221
D0394848

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62822173.454314%
B6283691.098201%
C6283102116.250199%
D6282586993.425661%

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 7262 6283 172 172 2.37% 2.74%
B 7263 6284 14 14 0.19% 0.22%
C 7263 6284 868 868 11.95% 13.81%
D 7261 6281 3239 3239 44.61% 51.57%

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 12 115 709252 4313.61 668 651 164.3
A 10 253 88517 534.88 668 651 164.3
A 8 249 55376 333.14 668 651 164.3
B 5 250 497393 3490.16 665 640 142.3
B 7 0 183692 1286.11 665 640 142.3
B 10 247 72954 508.07 665 640 142.3
C 15 224 3498932 20683.56 612 606 169.1
C 2 12 276610 1631.85 612 606 169.1
C 12 254 132689 780.93 612 606 169.1
D 8 176 11150089 277396.1 137 130 40.2
D 10 172 23410 579.18 137 130 40.2
D 6 239 19731 487.65 137 130 40.2

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