ASTROSAT CZTI

Data Quality Report

Orbit 54488

Creation date: 2025-10-24T10:39:35.152027
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_126T19_9000006518_54488cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54488cztM0_level2_quad_clean.evt
Size (bytes)572,875,20093,098,880
Size546.3 MB 88.8 MB
Events in quadrant A3,676,088635,880
Events in quadrant B3,785,209690,238
Events in quadrant C3,269,414631,866
Events in quadrant D9,950,225390,484

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159812
B0162632
C0148542
D0342393

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67522393.539692%
B67522543.761848%
C6753480.710795%
D6752255137.781398%

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 9072 6754 218 218 2.40% 3.23%
B 9072 6754 126 126 1.39% 1.87%
C 9073 6755 36 36 0.40% 0.53%
D 9072 6754 2354 2354 25.95% 34.85%

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 8 245 494940 2843.74 706 690 173.8
A 12 15 237069 1360.04 706 690 173.8
A 7 237 64027 364.42 706 690 173.8
B 0 213 416020 2706.7 707 681 153.4
B 2 249 385266 2506.28 707 681 153.4
B 10 247 81842 528.91 707 681 153.4
C 12 2 171087 882.38 698 690 193.1
C 7 64 101710 523.12 698 690 193.1
C 3 233 76839 394.33 698 690 193.1
D 8 176 6030874 38386.47 548 521 157.1
D 2 172 981142 6242.19 548 521 157.1
D 15 239 497146 3161.29 548 521 157.1

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