ASTROSAT CZTI

Data Quality Report

Orbit 55271

Creation date: 2025-12-16T02:33:06.272062
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_009T01_9000006534_55271cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55271cztM0_level2_quad_clean.evt
Size (bytes)386,164,80095,664,960
Size368.3 MB 91.2 MB
Events in quadrant A3,092,959625,259
Events in quadrant B3,175,963672,841
Events in quadrant C3,905,519592,356
Events in quadrant D3,626,048563,234

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137222
B0140542
C0161472
D0153062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6348470.740391%
B6348671.055451%
C63482243.528670%
D63471402.205767%

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 7488 6349 3 3 0.04% 0.05%
B 7488 6349 14 14 0.19% 0.22%
C 7488 6349 189 189 2.52% 2.98%
D 7487 6348 94 94 1.26% 1.48%

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 3 14 242040 1442.57 680 664 167.3
A 12 115 108766 646.07 680 664 167.3
A 7 243 27374 159.63 680 664 167.3
B 7 0 185543 1290.37 675 651 143.3
B 5 185 97477 675.75 675 651 143.3
B 4 81 69797 482.57 675 651 143.3
C 15 147 496222 2714.2 664 657 182.6
C 13 3 441938 2416.89 664 657 182.6
C 10 22 86336 469.26 664 657 182.6
D 11 129 632723 3381.66 664 634 186.9
D 6 239 198278 1057.39 664 634 186.9
D 7 96 51718 273.3 664 634 186.9

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