ASTROSAT CZTI

Data Quality Report

Orbit 53751

Creation date: 2025-09-04T20:11:49.474674
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_53751cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53751cztM0_level2_quad_clean.evt
Size (bytes)1,053,187,20085,069,440
Size1004.4 MB 81.1 MB
Events in quadrant A15,378,220294,185
Events in quadrant B4,851,071730,986
Events in quadrant C12,218,528412,610
Events in quadrant D5,964,508620,484

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0508580
B0194360
C0414081
D0229280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7432464562.500000%
B74321592.139397%
C7432311041.846071%
D74321882.529602%

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 7432 7432 4434 4434 59.66% 59.66%
B 7432 7432 116 116 1.56% 1.56%
C 7432 7432 2857 2857 38.44% 38.44%
D 7432 7432 200 200 2.69% 2.69%

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 11303787 78368.66 584 570 144.2
A 3 78 1129386 7826.43 584 570 144.2
A 8 62 317372 2196.49 584 570 144.2
B 7 0 555047 3383.34 764 741 163.8
B 4 81 398268 2426.4 764 741 163.8
B 6 255 168319 1022.85 764 741 163.8
C 15 224 4938844 29646.71 603 598 166.6
C 1 241 3848223 23099.17 603 598 166.6
C 15 158 288390 1727.76 603 598 166.6
D 2 172 2086749 9651.97 755 724 216.1
D 13 153 190084 876.16 755 724 216.1
D 2 249 129230 594.59 755 724 216.1

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