ASTROSAT CZTI

Data Quality Report

Orbit 32968

Creation date: 2024-06-27T20:43:59.044038
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/AS1C07_001T01_9000004752_32968cztM0_level2.evt modeM0/AS1C07_001T01_9000004752_32968cztM0_level2_quad_clean.evt
Size (bytes)1,155,792,960207,748,800
Size1.1 GB 198.1 MB
Events in quadrant A5,272,5821,435,007
Events in quadrant B9,732,3451,342,306
Events in quadrant C7,173,8201,407,180
Events in quadrant D12,038,8851,300,408

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236903
B0365093
C0293513
D0443343

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11661380.325873%
B11661156313.403653%
C116612982.555527%
D116616325.419775%

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 14346 11663 28 28 0.20% 0.24%
B 14345 11662 1188 1188 8.28% 10.19%
C 14346 11663 291 291 2.03% 2.50%
D 14346 11663 536 536 3.74% 4.60%

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 15 174 84478 315.81 1323 1296 263.4
A 13 254 24557 88.31 1323 1296 263.4
A 9 143 24040 86.35 1323 1296 263.4
B 5 172 3895142 16594.81 1241 1210 234.6
B 4 171 287240 1218.98 1241 1210 234.6
B 5 200 221816 940.16 1241 1210 234.6
C 9 54 1669399 5619.23 1280 1287 296.9
C 0 10 287442 963.95 1280 1287 296.9
C 1 241 118767 395.74 1280 1287 296.9
D 8 195 3283349 10341.96 1253 1225 317.4
D 7 223 1075963 3386.49 1253 1225 317.4
D 13 153 947996 2983.27 1253 1225 317.4

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