ASTROSAT CZTI

Data Quality Report

Orbit 20180605_A04_212T02_9000002140_level2

Creation date: 2025-11-22T18:05:08.776361
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/AS1A04_212T02_9000002140cztM0_level2.fits modeM0/AS1A04_212T02_9000002140cztM0_level2_quad_clean.evt
Size (bytes)77,863,68092,217,600
Size74.3 MB 87.9 MB
Events in quadrant A461,664575,930
Events in quadrant B444,828564,247
Events in quadrant C459,958548,168
Events in quadrant D398,592510,624

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184520
B0189300
C0181650
D0192560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8547560.655201%
B85471021.193401%
C8547420.491400%
D85471521.778402%

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 9351 8546 0 0 0.00% 0.00%
B 9351 8546 0 0 0.00% 0.00%
C 9351 8546 0 0 0.00% 0.00%
D 9351 8546 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 29 489 11.78 120 113 31.9
A 7 110 386 8.56 120 113 31.9
A 0 30 379 8.34 120 113 31.9
B 2 9 407 11.38 117 112 25.9
B 14 254 314 7.79 117 112 25.9
B 3 17 305 7.45 117 112 25.9
C 12 241 327 6.51 121 113 32.9
C 4 254 326 6.48 121 113 32.9
C 2 191 320 6.3 121 113 32.9
D 1 3 312 6.68 113 102 31.4
D 4 246 309 6.58 113 102 31.4
D 6 231 308 6.55 113 102 31.4

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