ASTROSAT CZTI

Data Quality Report

Orbit 58435

Creation date: 2026-07-17T01:17:09.552346
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_045T01_9000006590_58435cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58435cztM0_level2_quad_clean.evt
Size (bytes)1,578,597,120342,135,360
Size1.5 GB 326.3 MB
Events in quadrant A12,195,9932,241,754
Events in quadrant B15,186,5312,346,984
Events in quadrant C14,865,4602,099,838
Events in quadrant D14,336,2722,024,239

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04860
B04860
C04860
D04860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0538344
B0622164
C0614044
D0591624

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239175372.245265%
B2391811484.799732%
C2391810754.494523%
D239185252.195000%

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 26187 23921 181 181 0.69% 0.76%
B 26188 23922 693 693 2.65% 2.90%
C 26188 23922 783 783 2.99% 3.27%
D 26188 23922 370 370 1.41% 1.55%

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 12 114 1305989 1991.37 2627 2554 654.5
A 12 80 241641 365.27 2627 2554 654.5
A 3 14 154946 232.82 2627 2554 654.5
B 5 172 3273990 5979.32 2568 2470 547.1
B 4 201 679715 1237.79 2568 2470 547.1
B 4 171 205411 370.91 2568 2470 547.1
C 15 147 2778533 3998.11 2515 2486 694.3
C 14 245 893279 1282.93 2515 2486 694.3
C 14 254 262937 375.11 2515 2486 694.3
D 11 129 1118185 1551.15 2530 2417 719.3
D 8 240 763762 1058.43 2530 2417 719.3
D 2 120 533852 738.8 2530 2417 719.3

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