ASTROSAT CZTI

Data Quality Report

Orbit 57074

Creation date: 2026-04-16T12:39:55.225331
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/AS1A14_083T10_9000006566_57074cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57074cztM0_level2_quad_clean.evt
Size (bytes)289,851,84050,806,080
Size276.4 MB 48.5 MB
Events in quadrant A1,650,836348,641
Events in quadrant B2,327,353361,412
Events in quadrant C2,849,975298,041
Events in quadrant D3,624,013279,785

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0131

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07573158
B09551241
C011216242
D013449304

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0755
B0755
C0755
D0722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3550371.042254%
B35481915.383315%
C354941511.693435%
D354444812.641084%

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 4892 3562 11 11 0.22% 0.31%
B 4892 3558 74 74 1.51% 2.08%
C 4892 3562 374 374 7.65% 10.50%
D 4892 3553 490 490 10.02% 13.79%

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 13 248 42568 426.45 402 392 98.9
A 8 249 12964 127.12 402 392 98.9
A 10 251 9856 95.69 402 392 98.9
B 4 171 511570 6105.16 388 374 83.7
B 10 16 153867 1833.15 388 374 83.7
B 10 32 39559 467.98 388 374 83.7
C 15 198 890070 8698.96 370 367 102.3
C 1 16 226500 2210.99 370 367 102.3
C 12 254 150798 1470.82 370 367 102.3
D 12 33 1395876 13450.73 367 351 103.8
D 15 142 588424 5668.13 367 351 103.8
D 3 12 61487 589.26 367 351 103.8

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