ASTROSAT CZTI

Data Quality Report

Orbit 52975

Creation date: 2025-07-15T09:57:22.072310
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/AS1A13_003T01_9000006486_52975cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52975cztM0_level2_quad_clean.evt
Size (bytes)690,243,84067,789,440
Size658.3 MB 64.6 MB
Events in quadrant A13,410,11345,748
Events in quadrant B2,876,244606,208
Events in quadrant C4,834,041510,482
Events in quadrant D3,990,831492,087

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0435730
B0126900
C0183050
D0157820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01150
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55755575100.000000%
B5691941.651731%
C56645088.968927%
D56442804.961021%

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 6823 5629 5290 5290 77.53% 93.98%
B 6970 5758 30 30 0.43% 0.52%
C 7056 5744 511 511 7.24% 8.90%
D 6913 5703 265 265 3.83% 4.65%

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 9 191 13076156 729504.37 65 63 17.9
A 15 174 25112 1397.46 65 63 17.9
A 0 8 24275 1350.77 65 63 17.9
B 0 143 213723 1651.95 601 581 129.0
B 10 247 64727 497.16 601 581 129.0
B 7 0 63197 485.3 601 581 129.0
C 12 254 1130139 7305.2 562 558 154.6
C 15 215 329104 2124.77 562 558 154.6
C 4 5 304858 1967.96 562 558 154.6
D 8 176 453154 2811.46 570 546 161.0
D 15 78 379588 2354.49 570 546 161.0
D 1 0 273390 1694.82 570 546 161.0

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