ASTROSAT CZTI

Data Quality Report

Orbit 53406

Creation date: 2025-08-12T17:30:05.277839
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/AS1C09_011T09_9000006494_53406cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53406cztM0_level2_quad_clean.evt
Size (bytes)2,186,510,400191,309,760
Size2.0 GB 182.4 MB
Events in quadrant A15,132,0461,330,818
Events in quadrant B12,570,5311,614,876
Events in quadrant C32,891,450604,616
Events in quadrant D19,059,9931,092,124

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0565612
B0486922
C010896015
D0683492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16662273516.414596%
B166638845.305167%
C166611029561.791009%
D16662379022.746369%

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 17187 16664 1841 1841 10.71% 11.05%
B 17188 16665 460 460 2.68% 2.76%
C 17186 16662 9902 9902 57.62% 59.43%
D 17187 16665 3436 3436 19.99% 20.62%

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 7 191 4454463 11305.35 1599 1561 393.9
A 7 190 1705095 4325.05 1599 1561 393.9
A 15 174 1120653 2841.23 1599 1561 393.9
B 4 171 1604251 4455.37 1710 1649 359.7
B 4 206 1253868 3481.27 1710 1649 359.7
B 2 249 1010388 2804.38 1710 1649 359.7
C 1 241 21973531 75136.16 1061 1054 292.4
C 15 224 4978671 17021.25 1061 1054 292.4
C 15 178 578023 1972.98 1061 1054 292.4
D 12 16 8751597 20545.12 1492 1421 425.9
D 0 18 1966222 4613.29 1492 1421 425.9
D 2 153 538130 1260.17 1492 1421 425.9

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