ASTROSAT CZTI

Data Quality Report

Orbit 54949

Creation date: 2025-11-24T11:05:57.133028
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_014T01_9000006528_54949cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54949cztM0_level2_quad_clean.evt
Size (bytes)1,029,827,520146,185,920
Size982.1 MB 139.4 MB
Events in quadrant A6,258,6901,032,518
Events in quadrant B4,808,9001,159,947
Events in quadrant C5,937,2591,008,268
Events in quadrant D20,216,281423,901

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273403
B0235852
C0264852
D0681752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115894253.667271%
B11590400.345125%
C115901911.647972%
D11590665457.411562%

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 13439 11589 407 407 3.03% 3.51%
B 13440 11590 2 2 0.01% 0.02%
C 13440 11592 194 194 1.44% 1.67%
D 13439 11589 6434 6434 47.88% 55.52%

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 15 32 1236956 4181.29 1180 1149 295.6
A 3 14 177922 598.1 1180 1149 295.6
A 0 8 93376 312.05 1180 1149 295.6
B 7 0 46344 176.52 1187 1143 256.1
B 12 111 31422 118.24 1187 1143 256.1
B 11 111 29028 108.89 1187 1143 256.1
C 6 223 561692 1754.81 1153 1141 319.4
C 12 252 372868 1163.69 1153 1141 319.4
C 14 254 213288 664.13 1153 1141 319.4
D 15 94 11596734 53169.96 759 724 218.1
D 15 93 1947654 8927.05 759 724 218.1
D 15 110 1559505 7147.31 759 724 218.1

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