ASTROSAT CZTI

Data Quality Report

Orbit 56884

Creation date: 2026-04-06T12:06:37.662936
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_083T03_9000006562_56884cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56884cztM0_level2_quad_clean.evt
Size (bytes)612,259,200100,604,160
Size583.9 MB 95.9 MB
Events in quadrant A4,876,094673,682
Events in quadrant B3,584,131725,934
Events in quadrant C3,832,913663,393
Events in quadrant D9,808,728479,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197531
B0160581
C0167601
D0340721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72403204.419890%
B72412072.858721%
C72411632.251070%
D7241195727.026654%

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 8235 7241 213 213 2.59% 2.94%
B 8236 7242 103 103 1.25% 1.42%
C 8236 7242 135 135 1.64% 1.86%
D 8236 7242 2117 2117 25.70% 29.23%

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 1290279 6998.64 749 733 184.3
A 3 62 208872 1129.62 749 733 184.3
A 10 251 204991 1108.55 749 733 184.3
B 10 16 399492 2527.89 735 707 157.8
B 10 247 55196 345.41 735 707 157.8
B 0 245 46566 290.7 735 707 157.8
C 13 3 685182 3417.02 733 725 200.3
C 14 254 76427 377.93 733 725 200.3
C 11 244 73794 364.78 733 725 200.3
D 2 249 4381082 23695.44 654 625 184.9
D 8 160 1182500 6393.18 654 625 184.9
D 8 240 719130 3886.65 654 625 184.9

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