ASTROSAT CZTI

Data Quality Report

Orbit 20220710_T05_041T01_9000005234_level2

Creation date: 2026-01-03T17:29:54.590048
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/AS1T05_041T01_9000005234cztM0_level2.fits modeM0/AS1T05_041T01_9000005234cztM0_level2_quad_clean.evt
Size (bytes)260,824,320350,657,280
Size248.7 MB 334.4 MB
Events in quadrant A1,547,8342,270,902
Events in quadrant B1,436,6402,154,995
Events in quadrant C1,516,6002,161,187
Events in quadrant D1,307,1301,943,095

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01080
C01050
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0554660
B0656660
C0623410
D0733120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017740
B017740
C017740
D017740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26467640.241811%
B2651314345.408667%
C264677072.671251%
D2647210453.947567%

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 36797 26473 0 0 0.00% 0.00%
B 36797 26450 0 0 0.00% 0.00%
C 36797 26470 0 0 0.00% 0.00%
D 36797 26481 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 9 19 1254 8.66 404 381 100.9
A 7 110 1215 8.27 404 381 100.9
A 0 29 1209 8.21 404 381 100.9
B 2 9 1227 11.64 380 365 74.1
B 3 80 1097 9.88 380 365 74.1
B 2 8 980 8.3 380 365 74.1
C 1 81 1259 8.51 400 377 103.6
C 3 202 1222 8.16 400 377 103.6
C 3 203 1214 8.08 400 377 103.6
D 6 62 957 6.14 374 342 100.2
D 7 3 951 6.08 374 342 100.2
D 6 38 938 5.95 374 342 100.2

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