ASTROSAT CZTI

Data Quality Report

Orbit 57071

Creation date: 2026-04-16T05:01:44.079013
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_083T10_9000006566_57071cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57071cztM0_level2_quad_clean.evt
Size (bytes)542,010,24092,136,960
Size516.9 MB 87.9 MB
Events in quadrant A3,354,155629,280
Events in quadrant B4,295,322644,143
Events in quadrant C5,467,982555,215
Events in quadrant D6,432,697500,388

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147752
B0175182
C0207585
D0237772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66081592.406174%
B66085017.581719%
C660769310.488875%
D660788813.440291%

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 7658 6608 136 136 1.78% 2.06%
B 7658 6608 266 266 3.47% 4.03%
C 7657 6607 627 627 8.19% 9.49%
D 7657 6608 965 965 12.60% 14.60%

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 7 64 378942 2162.47 708 690 174.9
A 3 14 88841 503.96 708 690 174.9
A 10 251 65858 372.57 708 690 174.9
B 10 16 904399 6272.03 676 652 144.1
B 4 171 421220 2918.75 676 652 144.1
B 0 63 63796 438.22 676 652 144.1
C 1 16 1455662 7981.73 663 658 182.3
C 12 254 1059556 5808.81 663 658 182.3
C 14 245 96806 527.44 663 658 182.3
D 12 33 2173461 11732.65 641 611 185.2
D 15 142 1534493 8282.44 641 611 185.2
D 8 48 59526 318.12 641 611 185.2

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