ASTROSAT CZTI

Data Quality Report

Orbit 58253

Creation date: 2026-07-04T18:14:24.492998
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_044T03_9000006588_58253cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58253cztM0_level2_quad_clean.evt
Size (bytes)733,999,68075,839,040
Size700.0 MB 72.3 MB
Events in quadrant A2,990,829620,994
Events in quadrant B11,358,174294,917
Events in quadrant C3,359,506576,885
Events in quadrant D8,981,403371,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134861
B0380261
C0145501
D0309933

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61861262.036857%
B6186368459.553831%
C61861522.457161%
D6186225336.420951%

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 7001 6187 17 17 0.24% 0.27%
B 7001 6187 3012 3012 43.02% 48.68%
C 7001 6187 105 105 1.50% 1.70%
D 7001 6187 1920 1920 27.42% 31.03%

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 152576 877.93 685 669 173.0
A 7 64 77097 441.71 685 669 173.0
A 0 117 23107 129.68 685 669 173.0
B 6 255 7564583 79634.75 438 422 95.0
B 2 249 1216497 12802.72 438 422 95.0
B 4 206 401831 4225.99 438 422 95.0
C 14 96 206989 1146.81 651 643 179.9
C 6 223 164530 910.83 651 643 179.9
C 13 3 151879 840.52 651 643 179.9
D 12 110 4214119 26224.96 547 521 160.7
D 8 160 1710321 10641.6 547 521 160.7
D 11 242 216628 1345.03 547 521 160.7

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