ASTROSAT CZTI

Data Quality Report

Orbit 20180208_G08_071T01_9000001888_level2

Creation date: 2025-11-19T11:10:36.354197
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/AS1G08_071T01_9000001888cztM0_level2.fits modeM0/AS1G08_071T01_9000001888cztM0_level2_quad_clean.evt
Size (bytes)2,947,322,8802,929,132,800
Size2.7 GB 2.7 GB
Events in quadrant A18,132,42417,847,999
Events in quadrant B16,826,23816,947,337
Events in quadrant C17,873,28617,202,056
Events in quadrant D15,451,39615,748,763

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062400
B062400
C062400
D062400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05030
B05030
C05030
D05030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06502930
B08064640
C06299620
D07165370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30614732181.051129%
B306147214016.990433%
C30614724020.784590%
D30614781412.659180%

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 356848 306147 0 0 0.00% 0.00%
B 356848 305071 0 0 0.00% 0.00%
C 356848 306148 0 0 0.00% 0.00%
D 356848 306094 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 17176 11.02 4720 4425 1157.4
A 7 110 14621 8.81 4720 4425 1157.4
A 9 19 13430 7.78 4720 4425 1157.4
B 2 9 14279 11.57 4437 4233 868.3
B 3 17 11178 8.0 4437 4233 868.3
B 14 254 11167 7.99 4437 4233 868.3
C 1 80 13365 7.46 4718 4401 1201.5
C 1 81 13113 7.25 4718 4401 1201.5
C 12 241 12714 6.92 4718 4401 1201.5
D 3 14 11274 6.25 4411 4021 1160.8
D 6 231 11236 6.22 4411 4021 1160.8
D 10 189 10792 5.83 4411 4021 1160.8

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