ASTROSAT CZTI

Data Quality Report

Orbit 54296

Creation date: 2025-10-11T12:14:36.689156
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_126T15_9000006516_54296cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54296cztM0_level2_quad_clean.evt
Size (bytes)636,603,84083,442,240
Size607.1 MB 79.6 MB
Events in quadrant A2,924,466615,260
Events in quadrant B3,176,449666,256
Events in quadrant C6,332,731478,747
Events in quadrant D10,630,838317,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136641
B0139481
C0235652
D0359491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6439911.413263%
B6439610.947352%
C6438134120.829450%
D6438308347.887543%

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 7499 6440 63 63 0.84% 0.98%
B 7499 6440 10 10 0.13% 0.16%
C 7498 6439 1336 1336 17.82% 20.75%
D 7498 6439 2536 2536 33.82% 39.38%

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 104582 632.26 670 655 164.4
A 7 29 66272 399.2 670 655 164.4
A 12 17 43549 260.96 670 655 164.4
B 14 167 160599 1123.09 668 643 142.4
B 7 0 128960 900.94 668 643 142.4
B 10 247 67292 467.96 668 643 142.4
C 1 241 3114783 19227.6 590 586 162.0
C 12 249 413265 2547.95 590 586 162.0
C 14 254 306044 1885.95 590 586 162.0
D 8 176 8251329 63911.83 451 431 129.1
D 2 172 288522 2231.57 451 431 129.1
D 3 12 95606 737.23 451 431 129.1

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