ASTROSAT CZTI

Data Quality Report

Orbit 20160603_G05_009T01_9000000482_level2

Creation date: 2025-10-30T17:50:50.430097
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/AS1G05_009T01_9000000482cztM0_level2.fits modeM0/AS1G05_009T01_9000000482cztM0_level2_quad_clean.evt
Size (bytes)866,188,800946,526,400
Size826.1 MB 902.7 MB
Events in quadrant A5,080,2545,601,161
Events in quadrant B4,991,4425,736,236
Events in quadrant C5,161,7125,609,458
Events in quadrant D4,460,7945,187,104

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019420
B019420
C019420
D019420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02383480
B02565620
C01997080
D02211970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9531960616.358648%
B9531942184.425141%
C9531912061.265225%
D9531823192.432909%

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 113326 95092 0 0 0.00% 0.00%
B 113326 95315 0 0 0.00% 0.00%
C 113326 95314 0 0 0.00% 0.00%
D 113326 95258 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 4988 11.0 1319 1227 341.9
A 7 110 4250 8.84 1319 1227 341.9
A 0 30 3933 7.91 1319 1227 341.9
B 2 9 4408 11.48 1319 1246 275.4
B 12 226 3637 8.68 1319 1246 275.4
B 5 128 3444 7.98 1319 1246 275.4
C 1 80 3725 6.71 1364 1256 367.8
C 1 81 3623 6.44 1364 1256 367.8
C 7 111 3533 6.19 1364 1256 367.8
D 11 82 3931 8.04 1273 1152 345.6
D 3 14 3333 6.31 1273 1152 345.6
D 6 83 3238 6.04 1273 1152 345.6

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