ASTROSAT CZTI

Data Quality Report

Orbit 20200506_A08_003T15_9000003648_level2

Creation date: 2025-12-10T21:43:51.364527
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/AS1A08_003T15_9000003648cztM0_level2.fits modeM0/AS1A08_003T15_9000003648cztM0_level2_quad_clean.evt
Size (bytes)291,231,360249,223,680
Size277.7 MB 237.7 MB
Events in quadrant A1,781,9541,435,385
Events in quadrant B1,717,5821,442,569
Events in quadrant C1,735,3601,355,089
Events in quadrant D1,516,8821,245,686

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0634090
B0629710
C0635330
D0741690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06180
B06180
C06180
D06180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A300805131.705452%
B300804531.505984%
C300806172.051197%
D300806222.067819%

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 34435 30080 0 0 0.00% 0.00%
B 34435 30080 0 0 0.00% 0.00%
C 34435 30080 0 0 0.00% 0.00%
D 34435 30080 0 0 0.00% 0.00%

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 0 29 1740 11.2 463 433 116.7
A 7 110 1430 8.55 463 433 116.7
A 0 30 1349 7.85 463 433 116.7
B 2 9 1468 11.34 453 431 91.4
B 2 8 1225 8.68 453 431 91.4
B 5 225 1119 7.52 453 431 91.4
C 1 80 1334 7.65 457 426 118.8
C 1 81 1318 7.51 457 426 118.8
C 3 126 1222 6.7 457 426 118.8
D 7 5 1103 6.1 432 392 116.5
D 13 238 1098 6.06 432 392 116.5
D 3 159 1050 5.65 432 392 116.5

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