ASTROSAT CZTI

Data Quality Report

Orbit 51970

Creation date: 2025-05-07T23:39:36.551484
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/AS1C09_011T06_9000006468_51970cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51970cztM0_level2_quad_clean.evt
Size (bytes)1,434,191,040156,672,000
Size1.3 GB 149.4 MB
Events in quadrant A9,812,4611,082,239
Events in quadrant B8,196,0471,197,511
Events in quadrant C17,100,170776,996
Events in quadrant D17,027,871831,044

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374502
B0330162
C0593492
D0592822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123589517.695420%
B123596335.121774%
C12359416733.716320%
D12359282522.857836%

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 19990 12361 652 652 3.26% 5.27%
B 19990 12362 336 336 1.68% 2.72%
C 19990 12361 3095 3095 15.48% 25.04%
D 19990 12362 2742 2742 13.72% 22.18%

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 7 64 2708723 8563.97 1273 1243 316.1
A 8 62 469620 1481.51 1273 1243 316.1
A 4 3 286348 901.81 1273 1243 316.1
B 12 32 736941 2731.61 1273 1230 269.3
B 5 185 383143 1418.0 1273 1230 269.3
B 7 252 287297 1062.13 1273 1230 269.3
C 15 224 10326277 35334.3 1057 1046 292.2
C 0 193 1022038 3493.97 1057 1046 292.2
C 15 147 707401 2417.24 1057 1046 292.2
D 6 42 6284209 19210.37 1163 1113 327.1
D 3 12 1255021 3833.79 1163 1113 327.1
D 10 199 1184378 3617.8 1163 1113 327.1

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