ASTROSAT CZTI

Data Quality Report

Orbit 15803

Creation date: 2024-06-27T17:13:44.612369
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/AS1T02_097T01_9000002340_15803cztM0_level2.evt modeM0/AS1T02_097T01_9000002340_15803cztM0_level2_quad_clean.evt
Size (bytes)198,198,72043,637,760
Size189.0 MB 41.6 MB
Events in quadrant A2,070,370274,521
Events in quadrant B1,262,675305,199
Events in quadrant C1,357,550292,194
Events in quadrant D1,154,694284,403

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076692
B051151
C053971
D047921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228233714.767748%
B2282210.920245%
C2282411.796670%
D228240.175285%

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 3453 2284 194 194 5.62% 8.49%
B 3453 2284 1 1 0.03% 0.04%
C 3453 2284 6 6 0.17% 0.26%
D 3453 2284 0 0 0.00% 0.00%

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 15 239 937874 15882.32 283 278 59.0
A 10 253 23667 396.2 283 278 59.0
A 14 254 15077 250.69 283 278 59.0
B 0 229 14125 230.7 306 299 59.9
B 0 219 11571 188.09 306 299 59.9
B 4 142 8963 144.57 306 299 59.9
C 7 247 130195 1873.4 291 293 69.3
C 10 22 46052 659.92 291 293 69.3
C 14 238 45175 647.27 291 293 69.3
D 2 152 16054 213.34 295 286 73.9
D 2 234 9783 128.49 295 286 73.9
D 2 69 6185 79.81 295 286 73.9

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