ASTROSAT CZTI

Data Quality Report

Orbit 58914

Creation date: 2026-08-18T07:14:04.005659
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_004T07_9000006598_58914cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58914cztM0_level2_quad_clean.evt
Size (bytes)2,468,681,280318,366,720
Size2.3 GB 303.6 MB
Events in quadrant A35,666,2951,440,856
Events in quadrant B12,833,1362,449,272
Events in quadrant C13,593,6092,212,017
Events in quadrant D27,422,9481,870,795

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01226194
B0553754
C0577624
D0986334

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24208884836.549901%
B242086852.829643%
C242086232.573529%
D24208345414.268011%

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 26038 24213 7071 7071 27.16% 29.20%
B 26038 24213 371 371 1.42% 1.53%
C 26038 24213 499 499 1.92% 2.06%
D 26038 24213 2609 2609 10.02% 10.78%

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 14 238 24037267 43605.19 2231 2176 551.2
A 15 233 1594435 2888.72 2231 2176 551.2
A 0 24 788034 1425.73 2231 2176 551.2
B 4 236 521857 931.26 2606 2507 557.7
B 5 172 341438 607.74 2606 2507 557.7
B 6 255 322619 574.0 2606 2507 557.7
C 12 252 2349581 3343.93 2567 2540 701.9
C 3 233 276787 390.73 2567 2540 701.9
C 4 5 240983 339.72 2567 2540 701.9
D 12 110 16574748 23951.61 2430 2318 691.9
D 6 239 279147 400.09 2430 2318 691.9
D 5 173 213634 305.41 2430 2318 691.9

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