ASTROSAT CZTI

Data Quality Report

Orbit 54500

Creation date: 2025-10-25T05:23:24.988003
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_127T09_9000006520_54500cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54500cztM0_level2_quad_clean.evt
Size (bytes)525,372,48095,722,560
Size501.0 MB 91.3 MB
Events in quadrant A4,021,636644,930
Events in quadrant B3,778,429689,464
Events in quadrant C7,212,450533,507
Events in quadrant D3,923,454570,916

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165243
B0157932
C0259092
D0165262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65892223.369252%
B65902233.383915%
C6590116917.738998%
D65902093.171472%

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 8759 6591 177 177 2.02% 2.69%
B 8760 6592 91 91 1.04% 1.38%
C 8760 6592 1163 1163 13.28% 17.64%
D 8760 6592 138 138 1.58% 2.09%

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 13 248 570482 3125.4 736 718 182.3
A 8 245 127600 696.0 736 718 182.3
A 7 237 98308 535.32 736 718 182.3
B 2 249 634669 4078.37 728 704 155.4
B 5 185 75864 483.51 728 704 155.4
B 0 213 56281 357.53 728 704 155.4
C 7 64 2898701 15446.49 680 676 187.6
C 4 5 1101990 5870.01 680 676 187.6
C 13 3 190133 1009.81 680 676 187.6
D 3 12 571338 2788.59 715 681 204.6
D 2 172 175883 856.15 715 681 204.6
D 2 120 102461 497.36 715 681 204.6

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