ASTROSAT CZTI

Data Quality Report

Orbit 53726

Creation date: 2025-09-03T04:35:45.504728
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_022T04_9000006506_53726cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53726cztM0_level2_quad_clean.evt
Size (bytes)2,086,778,880181,071,360
Size1.9 GB 172.7 MB
Events in quadrant A31,447,877625,937
Events in quadrant B7,666,0011,552,808
Events in quadrant C21,465,6491,028,994
Events in quadrant D15,437,7801,172,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01045214
B0348142
C0748852
D0569642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15956936358.680120%
B159561430.896215%
C15956454728.497117%
D15956200912.590875%

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 16736 15957 9048 9048 54.06% 56.70%
B 16736 15958 57 57 0.34% 0.36%
C 16736 15958 3503 3503 20.93% 21.95%
D 16736 15958 1948 1948 11.64% 12.21%

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 24355866 83747.14 1145 1116 290.8
A 3 78 1209457 4155.05 1145 1116 290.8
A 0 8 385950 1323.3 1145 1116 290.8
B 5 185 391669 1127.45 1615 1556 346.0
B 7 0 280222 805.36 1615 1556 346.0
B 10 247 139225 397.87 1615 1556 346.0
C 15 224 12204108 31441.48 1400 1390 388.1
C 15 158 1296851 3337.88 1400 1390 388.1
C 7 64 437741 1124.3 1400 1390 388.1
D 1 241 3861651 8775.93 1525 1459 439.9
D 2 172 1518606 3449.15 1525 1459 439.9
D 7 110 1169080 2654.52 1525 1459 439.9

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