ASTROSAT CZTI

Data Quality Report

Orbit 20210411_A10_058T01_9000004298_level2

Creation date: 2025-12-23T22:16:32.796311
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_058T01_9000004298cztM0_level2.fits modeM0/AS1A10_058T01_9000004298cztM0_level2_quad_clean.evt
Size (bytes)1,567,402,5601,287,532,800
Size1.5 GB 1.2 GB
Events in quadrant A9,991,3887,664,754
Events in quadrant B9,170,6367,399,152
Events in quadrant C9,177,9926,694,929
Events in quadrant D8,455,8626,564,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03274250
B04886420
C04633560
D03852870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031820
B031820
C031820
D031820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15565119951.281714%
B15565149683.191756%
C155651146649.421077%
D15565139462.535159%

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 180782 155651 0 0 0.00% 0.00%
B 180782 155643 0 0 0.00% 0.00%
C 180782 155635 0 0 0.00% 0.00%
D 180782 155623 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 9594 11.52 2603 2457 619.8
A 7 110 7674 8.42 2603 2457 619.8
A 0 30 7368 7.92 2603 2457 619.8
B 2 9 7197 10.4 2430 2331 468.0
B 3 17 6071 7.99 2430 2331 468.0
B 2 8 6070 7.99 2430 2331 468.0
C 3 187 6358 6.72 2428 2284 606.0
C 12 241 6314 6.65 2428 2284 606.0
C 3 126 6258 6.56 2428 2284 606.0
D 15 46 6361 6.54 2422 2216 633.8
D 10 189 5986 5.95 2422 2216 633.8
D 6 67 5864 5.76 2422 2216 633.8

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