ASTROSAT CZTI

Data Quality Report

Orbit 37601

Creation date: 2024-06-27T21:42:02.705860
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_053T01_9000005338_37601cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37601cztM0_level2_quad_clean.evt
Size (bytes)873,662,400162,682,560
Size833.2 MB 155.1 MB
Events in quadrant A5,774,1121,053,984
Events in quadrant B6,477,5851,062,213
Events in quadrant C5,398,4871,080,177
Events in quadrant D8,072,261976,308

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237484
B0260133
C0226073
D0313633

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A109011561.431061%
B109012362.164939%
C10901300.275204%
D109017697.054399%

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 15049 10902 126 126 0.84% 1.16%
B 15049 10900 192 192 1.28% 1.76%
C 15049 10901 22 22 0.15% 0.20%
D 15050 10901 801 801 5.32% 7.35%

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 10 83 565547 2280.45 1237 1216 247.5
A 9 143 320578 1290.53 1237 1216 247.5
A 13 248 48189 189.82 1237 1216 247.5
B 5 172 467932 1975.68 1227 1192 236.2
B 5 255 423388 1787.13 1227 1192 236.2
B 0 213 242430 1021.15 1227 1192 236.2
C 15 214 470958 1663.21 1210 1218 282.4
C 14 254 90686 316.78 1210 1218 282.4
C 0 10 86587 302.27 1210 1218 282.4
D 2 250 1689308 5914.61 1175 1144 285.4
D 2 249 595127 2081.06 1175 1144 285.4
D 13 249 382844 1337.31 1175 1144 285.4

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