ASTROSAT CZTI

Data Quality Report

Orbit 20210727_A10_053T26_9000004594_level2

Creation date: 2025-12-27T23:37:45.726321
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_053T26_9000004594cztM0_level2.fits modeM0/AS1A10_053T26_9000004594cztM0_level2_quad_clean.evt
Size (bytes)125,804,160114,433,920
Size120.0 MB 109.1 MB
Events in quadrant A749,444681,350
Events in quadrant B710,802633,082
Events in quadrant C756,044642,079
Events in quadrant D654,916570,156

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324820
B0463230
C0302420
D0399850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135839176.751086%
B135839336.868880%
C135832752.024590%
D135835884.328941%

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 18233 13336 0 0 0.00% 0.00%
B 18234 13528 0 0 0.00% 0.00%
C 18234 13581 0 0 0.00% 0.00%
D 18234 13557 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 0 29 624 8.61 195 183 51.2
A 7 110 603 8.2 195 183 51.2
A 15 236 562 7.4 195 183 51.2
B 2 9 594 10.45 188 179 39.7
B 2 8 522 8.63 188 179 39.7
B 14 254 495 7.95 188 179 39.7
C 1 81 584 7.46 200 187 53.2
C 12 241 563 7.07 200 187 53.2
C 3 202 559 6.99 200 187 53.2
D 4 246 497 6.31 186 169 52.0
D 12 6 477 5.92 186 169 52.0
D 1 31 463 5.65 186 169 52.0

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