ASTROSAT CZTI

Data Quality Report

Orbit 53501

Creation date: 2025-08-18T23:44:36.708697
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_002T07_9000006498_53501cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53501cztM0_level2_quad_clean.evt
Size (bytes)876,049,92080,965,440
Size835.5 MB 77.2 MB
Events in quadrant A9,022,418530,974
Events in quadrant B4,705,954665,003
Events in quadrant C14,031,557211,772
Events in quadrant D4,157,852583,255

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314062
B0184239
C0462682
D0170062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6601174126.374792%
B660075011.363636%
C6600465870.575758%
D66002814.257576%

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 7606 6602 1425 1425 18.74% 21.58%
B 7605 6601 504 504 6.63% 7.64%
C 7605 6601 4264 4264 56.07% 64.60%
D 7605 6601 230 230 3.02% 3.48%

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 63 4474192 26868.19 682 666 166.5
A 3 62 1426123 8561.35 682 666 166.5
A 15 174 387343 2322.4 682 666 166.5
B 4 206 1379189 9056.81 716 690 152.2
B 0 171 201872 1321.78 716 690 152.2
B 4 171 110070 718.63 716 690 152.2
C 7 64 8964923 74387.23 445 441 120.5
C 1 241 2440999 20251.74 445 441 120.5
C 15 178 299443 2481.11 445 441 120.5
D 9 49 795299 3873.33 732 701 205.1
D 3 12 171403 832.1 732 701 205.1
D 8 176 92194 445.99 732 701 205.1

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