ASTROSAT CZTI

Data Quality Report

Orbit 20200121_C05_002T03_9000003448_level2

Creation date: 2025-12-08T07:50:33.854929
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/AS1C05_002T03_9000003448cztM0_level2.fits modeM0/AS1C05_002T03_9000003448cztM0_level2_quad_clean.evt
Size (bytes)82,290,24040,124,160
Size78.5 MB 38.3 MB
Events in quadrant A528,394186,274
Events in quadrant B501,880184,637
Events in quadrant C517,440179,170
Events in quadrant D443,754162,877

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158710
B0161390
C0173910
D0284300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71871582.198414%
B71871742.421038%
C71872473.436761%
D71873354.661194%

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 9792 7185 0 0 0.00% 0.00%
B 9792 7185 0 0 0.00% 0.00%
C 9792 7185 0 0 0.00% 0.00%
D 9792 7185 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 29 467 9.71 137 130 34.7
A 7 110 436 8.82 137 130 34.7
A 12 254 397 7.7 137 130 34.7
B 2 9 363 8.42 132 127 28.0
B 5 255 355 8.13 132 127 28.0
B 3 80 352 8.03 132 127 28.0
C 1 80 352 6.27 136 130 35.4
C 3 158 347 6.13 136 130 35.4
C 2 191 346 6.1 136 130 35.4
D 4 246 369 7.32 126 116 34.6
D 10 189 341 6.51 126 116 34.6
D 6 231 337 6.39 126 116 34.6

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