ASTROSAT CZTI

Data Quality Report

Orbit 20220725_C07_010T01_9000005246_level2

Creation date: 2026-01-03T19:49:28.734967
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/AS1C07_010T01_9000005246cztM0_level2.fits modeM0/AS1C07_010T01_9000005246cztM0_level2_quad_clean.evt
Size (bytes)1,135,082,8801,095,929,280
Size1.1 GB 1.0 GB
Events in quadrant A7,565,2567,867,983
Events in quadrant B1,285,8041,609,984
Events in quadrant C10,391,3938,233,465
Events in quadrant D5,960,1996,365,029

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026600
B027310
C027280
D027250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05270
B05420
C05270
D05420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02814030
B01610380
C02783640
D03390010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1329076000.451443%
B13371411321184.666527%
C1328846040.454532%
D13278353574.034402%

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 203199 135728 0 0 0.00% 0.00%
B 203174 34577 0 0 0.00% 0.00%
C 203199 135723 0 0 0.00% 0.00%
D 203199 135253 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 6218 9.03 1977 1857 482.8
A 7 110 6127 8.84 1977 1857 482.8
A 9 19 6085 8.76 1977 1857 482.8
B 2 9 1106 11.03 341 326 70.7
B 3 80 959 8.95 341 326 70.7
B 3 17 908 8.23 341 326 70.7
C 3 203 7222 6.92 2765 2673 657.7
C 1 81 6864 6.37 2765 2673 657.7
C 3 202 6692 6.11 2765 2673 657.7
D 7 3 4300 6.27 1705 1567 435.6
D 4 160 4299 6.27 1705 1567 435.6
D 10 189 4276 6.22 1705 1567 435.6

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