ASTROSAT CZTI

Data Quality Report

Orbit 20160301_T01_043T01_9000000350_level2

Creation date: 2025-10-27T23:07:55.411315
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/AS1T01_043T01_9000000350cztM0_level2.fits modeM0/AS1T01_043T01_9000000350cztM0_level2_quad_clean.evt
Size (bytes)283,417,920270,924,480
Size270.3 MB 258.4 MB
Events in quadrant A1,728,1921,583,737
Events in quadrant B1,672,6581,616,017
Events in quadrant C1,689,0181,533,060
Events in quadrant D1,403,2461,382,852

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0623410
B0629250
C0692250
D0911380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06200
B06200
C06200
D06200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A303905431.786772%
B303905071.668312%
C303906612.175058%
D3039028509.378085%

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 36154 30385 0 0 0.00% 0.00%
B 36154 30383 0 0 0.00% 0.00%
C 36154 30381 0 0 0.00% 0.00%
D 36154 30380 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 14 188 1644 10.4 447 418 117.9
A 0 29 1629 10.28 447 418 117.9
A 7 110 1550 9.61 447 418 117.9
B 2 9 1449 11.99 439 418 86.0
B 12 226 1246 9.63 439 418 86.0
B 5 128 1185 8.92 439 418 86.0
C 3 158 1122 5.89 446 412 120.4
C 9 242 1113 5.82 446 412 120.4
C 1 65 1107 5.77 446 412 120.4
D 7 5 1031 5.9 399 362 113.4
D 6 44 1028 5.87 399 362 113.4
D 1 19 1021 5.81 399 362 113.4

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