ASTROSAT CZTI

Data Quality Report

Orbit 52467

Creation date: 2025-06-26T11:55:09.173734
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/AS1A13_037T01_9000006476_52467cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52467cztM0_level2_quad_clean.evt
Size (bytes)1,361,712,960124,050,240
Size1.3 GB 118.3 MB
Events in quadrant A6,223,300994,425
Events in quadrant B7,135,8611,093,351
Events in quadrant C9,124,750932,423
Events in quadrant D27,102,0211,819

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264022
B0284092
C0345422
D0879252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105994033.802245%
B106003253.066038%
C106007016.613208%
D105991058699.877347%

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 12884 10601 366 366 2.84% 3.45%
B 12885 10602 227 227 1.76% 2.14%
C 12885 10601 633 633 4.91% 5.97%
D 12884 10601 9811 9811 76.15% 92.55%

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 8 249 1421157 5227.2 1105 1077 271.7
A 15 174 121574 443.54 1105 1077 271.7
A 13 248 111750 407.38 1105 1077 271.7
B 10 254 1323053 5574.31 1111 1070 237.2
B 0 213 414703 1744.14 1111 1070 237.2
B 4 171 252095 1058.48 1111 1070 237.2
C 15 224 2028102 6986.98 1063 1054 290.1
C 12 254 1199751 4131.76 1063 1054 290.1
C 13 3 519850 1788.22 1063 1054 290.1
D 15 93 24042913 323653.7 239 225 74.3
D 6 42 1345689 18112.13 239 225 74.3
D 12 17 130510 1753.85 239 225 74.3

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