ASTROSAT CZTI

Data Quality Report

Orbit 52001

Creation date: 2025-05-09T23:22:20.180303
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_011T06_9000006468_52001cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52001cztM0_level2_quad_clean.evt
Size (bytes)710,150,40074,344,320
Size677.3 MB 70.9 MB
Events in quadrant A6,717,282460,612
Events in quadrant B4,248,446561,962
Events in quadrant C5,241,524486,083
Events in quadrant D9,633,510338,507

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239591
B0165531
C0195091
D0326531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5776112019.390582%
B57764357.531163%
C577762910.888004%
D5777205535.572096%

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 6856 5777 1026 1026 14.96% 17.76%
B 6856 5777 291 291 4.24% 5.04%
C 6857 5778 563 563 8.21% 9.74%
D 6857 5777 2031 2031 29.62% 35.16%

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 15 174 968687 6895.79 557 544 140.4
A 12 2 876343 6238.05 557 544 140.4
A 7 64 799895 5693.53 557 544 140.4
B 4 171 461386 3740.68 584 565 123.2
B 4 206 429053 3478.22 584 565 123.2
B 8 128 259254 2099.89 584 565 123.2
C 15 224 1640172 10425.15 567 563 157.3
C 9 38 623387 3960.11 567 563 157.3
C 4 5 360241 2286.95 567 563 157.3
D 6 42 4141998 29511.48 485 462 140.3
D 12 17 1720579 12257.09 485 462 140.3
D 8 176 582275 4145.84 485 462 140.3

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