ASTROSAT CZTI

Data Quality Report

Orbit 20210917_A10_005T01_9000004700_level2

Creation date: 2025-12-29T05:12:36.792496
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/AS1A10_005T01_9000004700cztM0_level2.fits modeM0/AS1A10_005T01_9000004700cztM0_level2_quad_clean.evt
Size (bytes)2,796,042,2402,386,028,160
Size2.6 GB 2.2 GB
Events in quadrant A17,638,35414,400,634
Events in quadrant B16,150,06613,326,882
Events in quadrant C16,490,63212,782,420
Events in quadrant D14,404,34211,773,346

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06154500
B09757150
C07614870
D09676520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059380
B059380
C059380
D059380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29165340941.403723%
B291646176506.051857%
C291649222167.617376%
D291652173235.939613%

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 337679 291647 0 0 0.00% 0.00%
B 337679 291485 0 0 0.00% 0.00%
C 337679 291419 0 0 0.00% 0.00%
D 337679 291371 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 17541 11.87 4598 4326 1113.7
A 7 110 14276 8.93 4598 4326 1113.7
A 0 30 13806 8.51 4598 4326 1113.7
B 2 9 13118 10.81 4287 4098 834.2
B 2 8 10997 8.27 4287 4098 834.2
B 3 17 10801 8.03 4287 4098 834.2
C 12 241 11803 7.1 4371 4102 1084.7
C 3 187 11515 6.83 4371 4102 1084.7
C 9 209 11076 6.43 4371 4102 1084.7
D 10 189 10645 6.33 4131 3751 1089.4
D 6 67 10186 5.91 4131 3751 1089.4
D 7 3 10078 5.81 4131 3751 1089.4

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