ASTROSAT CZTI

Data Quality Report

Orbit 20180708_T02_057T01_9000002212_level2

Creation date: 2025-11-23T09:09:53.386431
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/AS1T02_057T01_9000002212cztM0_level2.fits modeM0/AS1T02_057T01_9000002212cztM0_level2_quad_clean.evt
Size (bytes)852,353,280933,528,960
Size812.9 MB 890.3 MB
Events in quadrant A5,165,6625,773,261
Events in quadrant B4,933,7285,684,899
Events in quadrant C5,052,5825,473,256
Events in quadrant D4,413,3425,095,928

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02104140
B02130620
C01924860
D01986910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018520
B018520
C018520
D018520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9114316871.850938%
B9114233913.720568%
C9114311751.289183%
D9114315891.743414%

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 103698 91134 0 0 0.00% 0.00%
B 103698 91065 0 0 0.00% 0.00%
C 103698 91139 0 0 0.00% 0.00%
D 103698 91137 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 5035 11.29 1346 1263 334.1
A 7 110 4165 8.69 1346 1263 334.1
A 0 30 3937 8.0 1346 1263 334.1
B 2 9 4281 12.21 1303 1247 248.5
B 14 254 3308 8.29 1303 1247 248.5
B 3 17 3192 7.82 1303 1247 248.5
C 12 241 3697 7.18 1335 1245 341.7
C 3 126 3408 6.33 1335 1245 341.7
C 2 191 3315 6.06 1335 1245 341.7
D 3 14 3321 6.42 1259 1142 339.2
D 6 231 3222 6.13 1259 1142 339.2
D 3 159 3130 5.86 1259 1142 339.2

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