ASTROSAT CZTI

Data Quality Report

Orbit 28871

Creation date: 2024-06-27T19:57:25.662360
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/AS1A10_123T07_9000004140_28871cztM0_level2.evt modeM0/AS1A10_123T07_9000004140_28871cztM0_level2_quad_clean.evt
Size (bytes)318,908,16041,408,640
Size304.1 MB 39.5 MB
Events in quadrant A1,697,835263,034
Events in quadrant B1,792,023268,700
Events in quadrant C1,748,108259,005
Events in quadrant D4,187,396220,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070631
B073541
C071951
D0147811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3406521.526718%
B3406681.996477%
C3406972.847915%
D340668920.229008%

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 4141 3406 0 0 0.00% 0.00%
B 4141 3406 10 10 0.24% 0.29%
C 4141 3406 0 0 0.00% 0.00%
D 4141 3406 571 571 13.79% 16.76%

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 13 254 6087 63.04 437 427 89.8
A 3 137 4379 44.02 437 427 89.8
A 0 226 3740 36.9 437 427 89.8
B 10 245 50429 583.31 431 418 85.7
B 5 255 20534 234.62 431 418 85.7
B 0 190 13507 152.66 431 418 85.7
C 14 238 75164 751.47 416 417 99.5
C 3 233 29609 293.48 416 417 99.5
C 14 254 13133 127.84 416 417 99.5
D 8 195 1898684 20165.64 389 376 94.1
D 7 80 688170 7306.4 389 376 94.1
D 1 52 85993 909.5 389 376 94.1

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