ASTROSAT CZTI

Data Quality Report

Orbit 53682

Creation date: 2025-08-31T12:06:09.701806
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_022T05_9000006504_53682cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53682cztM0_level2_quad_clean.evt
Size (bytes)2,460,908,160153,181,440
Size2.3 GB 146.1 MB
Events in quadrant A29,519,983684,379
Events in quadrant B11,291,0301,437,696
Events in quadrant C34,465,886319,954
Events in quadrant D14,655,2901,149,828

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0981382
B0440552
C01126992
D0541713

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15140842255.627477%
B151417955.250644%
C151411205179.591837%
D15140171111.301189%

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 15710 15141 8108 8108 51.61% 53.55%
B 15711 15144 465 465 2.96% 3.07%
C 15711 15141 11345 11345 72.21% 74.93%
D 15710 15142 1664 1664 10.59% 10.99%

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 63 21477296 68859.94 1257 1230 311.9
A 14 254 991296 3174.51 1257 1230 311.9
A 15 174 512640 1639.76 1257 1230 311.9
B 7 0 2146783 6516.1 1552 1497 329.2
B 5 185 1863283 5655.0 1552 1497 329.2
B 4 216 224298 676.74 1552 1497 329.2
C 1 241 16919403 78459.18 770 765 215.6
C 15 224 9466821 43898.27 770 765 215.6
C 7 64 2040910 9461.05 770 765 215.6
D 10 172 3249828 7546.25 1488 1420 430.5
D 12 34 1808783 4198.61 1488 1420 430.5
D 7 70 909832 2110.3 1488 1420 430.5

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