ASTROSAT CZTI

Data Quality Report

Orbit 26975

Creation date: 2024-06-27T19:35:09.351294
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/AS1A09_145T01_9000003900_26975cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26975cztM0_level2_quad_clean.evt
Size (bytes)1,002,435,840129,709,440
Size956.0 MB 123.7 MB
Events in quadrant A12,175,645708,781
Events in quadrant B6,046,348881,325
Events in quadrant C4,987,190841,457
Events in quadrant D6,483,033811,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0428240
B0237500
C0205910
D0256590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9865311531.576280%
B98656336.416624%
C98651811.834769%
D98653723.770907%

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 11289 9864 2268 2268 20.09% 22.99%
B 11290 9865 371 371 3.29% 3.76%
C 11290 9865 10 10 0.09% 0.10%
D 11289 9864 235 235 2.08% 2.38%

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 14 235 7970434 36474.49 1076 1055 218.5
A 8 192 29555 130.44 1076 1055 218.5
A 0 13 16363 70.06 1076 1055 218.5
B 5 172 1233484 5264.08 1218 1187 234.1
B 12 111 28208 115.43 1218 1187 234.1
B 0 219 26051 106.21 1218 1187 234.1
C 14 238 192217 668.92 1204 1213 285.5
C 15 208 73974 254.82 1204 1213 285.5
C 0 207 17083 55.58 1204 1213 285.5
D 1 52 1074645 3717.24 1203 1173 288.8
D 2 250 623403 2154.67 1203 1173 288.8
D 7 38 79733 272.04 1203 1173 288.8

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