ASTROSAT CZTI

Data Quality Report

Orbit 56928

Creation date: 2026-04-06T14:29:29.366752
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_083T14_9000006564_56928cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56928cztM0_level2_quad_clean.evt
Size (bytes)950,440,32063,679,680
Size906.4 MB 60.7 MB
Events in quadrant A11,336,337319,385
Events in quadrant B6,776,202553,264
Events in quadrant C3,618,817590,837
Events in quadrant D12,975,57535,702

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378881
B0243201
C0150391
D0427514

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6135329553.708231%
B6135127420.766096%
C61361732.819426%
D6135585295.387123%

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 7350 6135 3164 3164 43.05% 51.57%
B 7350 6136 1004 1004 13.66% 16.36%
C 7351 6137 144 144 1.96% 2.35%
D 7349 6134 4057 4057 55.20% 66.14%

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 7 64 9379280 79529.29 468 456 117.9
A 10 251 49736 417.88 468 456 117.9
A 3 79 31040 259.34 468 456 117.9
B 5 172 2782399 21948.13 598 576 126.7
B 10 16 1059884 8357.77 598 576 126.7
B 5 185 230836 1816.71 598 576 126.7
C 13 3 766421 4289.29 652 645 178.5
C 14 254 85219 473.72 652 645 178.5
C 15 198 60554 335.56 652 645 178.5
D 12 33 10632964 140571.89 262 250 75.6
D 8 160 482919 6381.22 262 250 75.6
D 2 249 309213 4084.71 262 250 75.6

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