ASTROSAT CZTI

Data Quality Report

Orbit 59022

Creation date: 2026-08-25T11:24:36.122417
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_004T02_9000006600_59022cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59022cztM0_level2_quad_clean.evt
Size (bytes)855,501,12065,393,280
Size815.9 MB 62.4 MB
Events in quadrant A3,937,995580,276
Events in quadrant B7,799,245443,865
Events in quadrant C13,366,73166,035
Events in quadrant D6,115,943484,947

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156461
B0271341
C0434282
D0223231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57911111.916767%
B5791205035.399758%
C5791517089.276463%
D579159110.205491%

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 6970 5790 52 52 0.75% 0.90%
B 6971 5791 1637 1637 23.48% 28.27%
C 6970 5790 5116 5116 73.40% 88.36%
D 6971 5792 608 608 8.72% 10.50%

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 24 1326010 8289.78 653 637 159.9
A 3 14 17476 105.32 653 637 159.9
A 10 251 17109 103.03 653 637 159.9
B 2 249 5228330 43382.8 559 538 120.5
B 4 236 233329 1931.81 559 538 120.5
B 4 201 30595 249.43 559 538 120.5
C 15 219 12206187 166796.17 263 261 73.2
C 6 12 43754 594.34 263 261 73.2
C 1 16 29024 393.05 263 261 73.2
D 12 110 1866997 10710.11 609 580 174.3
D 12 1 1296544 7436.67 609 580 174.3
D 2 62 327463 1875.76 609 580 174.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct