ASTROSAT CZTI

Data Quality Report

Orbit 57294

Creation date: 2026-05-01T05:36:18.666973
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_049T03_9000006570_57294cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57294cztM0_level2_quad_clean.evt
Size (bytes)445,705,92087,301,440
Size425.1 MB 83.3 MB
Events in quadrant A3,395,198564,987
Events in quadrant B3,423,566618,184
Events in quadrant C4,211,528517,582
Events in quadrant D4,940,282468,956

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147092
B0150072
C0172532
D0194262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6792290.426973%
B67921301.914016%
C67922002.944641%
D67923435.050059%

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 7969 7071 12 12 0.15% 0.17%
B 7969 7071 61 61 0.77% 0.86%
C 7969 7071 162 162 2.03% 2.29%
D 7969 7071 277 277 3.48% 3.92%

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 8 4 415699 2328.35 726 707 178.2
A 3 14 122688 684.38 726 707 178.2
A 15 16 20839 112.95 726 707 178.2
B 10 16 156184 1004.44 714 688 154.8
B 7 252 141542 909.86 714 688 154.8
B 5 185 122171 784.73 714 688 154.8
C 15 224 1102167 5872.51 689 684 187.6
C 14 254 156687 831.72 689 684 187.6
C 6 223 62309 328.55 689 684 187.6
D 3 224 1588587 8168.97 683 650 194.4
D 8 240 282589 1450.41 683 650 194.4
D 3 12 106359 543.81 683 650 194.4

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