ASTROSAT CZTI

Data Quality Report

Orbit 53988

Creation date: 2025-09-22T19:08:46.011793
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_041T01_9000006510_53988cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53988cztM0_level2_quad_clean.evt
Size (bytes)2,087,208,000284,466,240
Size1.9 GB 271.3 MB
Events in quadrant A12,886,8572,025,904
Events in quadrant B13,641,6922,167,250
Events in quadrant C11,379,1631,940,044
Events in quadrant D37,661,219970,945

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04460
B04460
C04460
D04460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0538894
B0561074
C0497214
D01271504

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219008673.958904%
B2190113346.091046%
C219013441.570705%
D219011065348.641615%

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 23571 21903 546 546 2.32% 2.49%
B 23572 21904 862 862 3.66% 3.94%
C 23572 21905 198 198 0.84% 0.90%
D 23572 21902 9190 9190 38.99% 41.96%

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 15 174 2060851 3583.17 2318 2259 574.5
A 0 8 664495 1152.68 2318 2259 574.5
A 3 45 400667 693.47 2318 2259 574.5
B 5 185 2857192 5834.61 2287 2201 489.3
B 5 250 496651 1010.48 2287 2201 489.3
B 2 249 378190 768.39 2287 2201 489.3
C 14 254 351436 567.97 2262 2240 614.8
C 14 80 295767 477.42 2262 2240 614.8
C 9 38 264605 426.74 2262 2240 614.8
D 8 176 22890827 49393.96 1615 1541 463.4
D 2 165 3451616 7445.09 1615 1541 463.4
D 2 172 2180070 4701.16 1615 1541 463.4

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